My main criticism of Apple's new musical social network, Ping, was its poor integration with iTunes. In its original version it was only integrated into the store, which I thought was very weak.

Now with iTunes version 10.0.1, a Ping sidebar has been added to the right of the interface, and you are now able to 'like' anything you're listening to. I have to admit that makes it a lot better, and answers my criticism that Ping didn't mesh with user's libraries. The sidebar also sums up the activity, purchases and likes of your Ping friends. Overall, it's a big step in the right direction, but it's still no Last.fm killer, and the experience isn't rich enough to convert me just yet. It will be interesting to see how quickly we'll see further improvements to Ping in the future.